This package contains one function (at present) which returns PDL::Option objects for default settings for plot windows and plot commands.
This should be complemented by functions that could affect this such as file reading commands etc.

The linewidth,
character height,
font and axis colour to use on hardcopy devices.
The default values are HardLW=1,
HardCH=1.4,
HardFont=2 (Roman),
HardAxisColour=1 (Black) and HardColour=1 as well.
The latter is the default plot colour to use on hardcopy devices.

The axis style to use.
See the PDL::Graphics::PGPLOT::Window documentation for details.
It defaults to 'Normal' which is a labelled box.
Valid arguments are 'Empty',
'Box',
'Normal',
'Axes',
'Grid',
'LogX',
'LogY',
'LogXY'.

Boolean value which,
if true,
causes axis labels to be pulled slightly closer to the main viewport than usual.
That's handy for making multi-panel plots.
Undef (the default) is equivalent to 0 for panels with NYPanels <= 1 and 1 for panels with NYPanels > 1.